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1. Visit <a data-path="/viewer_attachment/attachment.py">attachment.maff</a> with option "Viewer / Force open attachments" <strong>unchecked</strong>, and the MAFF file should be downloaded.

2. Visit <a data-path="/viewer_attachment/attachment.py">attachment.maff</a> with option "Viewer / Force open attachments" <strong>checked</strong>, and the MAFF file should be opened in the viewer.
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